公开(公告)号：US20190008459A1

公开(公告)日：2019-01-10

申请号：US16023352

申请日：2018-06-29

Applicant: STICHTING IMEC NEDERLAND

Inventor： Ilde Rosa LORATO

IPC: A61B5/00 ,  A61B5/024 ,  A61B5/08 ,  A61B5/05 ,  G01S13/50 ,  G01S7/35

Abstract: A method for detecting a vital sign of a subject (102) comprises: receiving (302) a reflected radio frequency signal from the subject (102), the reflected signal being based on a transmitted signal, which is Doppler-shifted due to mechanical movements corresponding to the heart rate and/or the respiratory rate; dividing (304) a baseband signal into a sequence of sliding windows (200), each sliding window (200) representing a time interval; estimating (306) a vital sign parameter in at least one sliding window (200); determining (308) whether a vital sign parameter may be reliably estimated in at least one sliding window (200); on condition that the vital sign parameter may not be reliably estimated in a sliding window (200), determining (310) a vital sign parameter of the sliding window (200) based on vital sign parameters estimated in a plurality of windows representing time intervals close to the time interval of the window (200).

公开(公告)号：US20190011549A1

公开(公告)日：2019-01-10

申请号：US16026465

申请日：2018-07-03

Applicant: STICHTING IMEC NEDERLAND

Inventor： Marco MERCURI ,  Ilde Rosa LORATO

IPC: G01S13/72 ,  G16H40/63 ,  G01S13/536 ,  G01S13/58

Abstract: A method for localization and monitoring of living being targets in an environment comprise: transmitting (302) a sequence of radio frequency waveforms, the waveforms being a continuous-wave waveform modulated in frequency and/or phase; detecting (304) a sequence of reflected waveforms being reflected by a target and Doppler-shifted due to a movement of the target, forming (306) a sequence of waveform transforms, wherein the waveform transform comprises discretized information in a plurality of range bins, and wherein the information in a single range bin corresponds to reflections occurring at a specific sector in the environment; analyzing (308) information for a single specific sector in a sub-sequence of the sequence of waveform transforms, and determining (310) movement of a target in the specific sector based on the waveform transform information for that specific sector during a time period corresponding to the sub-sequence.

公开(公告)号：US20250140386A1

公开(公告)日：2025-05-01

申请号：US18914585

申请日：2024-10-14

Applicant: Stichting IMEC Nederland ,  IMEC VZW ,  Katholieke Universiteit Leuven

Inventor： Ilde Rosa LORATO ,  Jorge HERRANZ OLAZABAL

IPC: G16H30/40 ,  A61B5/00 ,  G16H40/67

Abstract: According to an aspect of the present inventive concept there is provided a method for analyzing a speckle pattern from biological tissue, the method comprising: receiving a time sequence of images of the speckle pattern, wherein each image of the time sequence of images comprises a plurality of elements; and for each respective image of the time sequence of images: applying a digital spatial filter procedure to the image for enhancing areas in the image corresponding to speckles of the speckle pattern, thereby generating a filtered image wherein a morphology of speckles of the speckle pattern is enhanced by compensation for variations in light intensity in the image; and analyzing the filtered image to determine a speckle pattern value representing an amount of distinguishable speckles of the speckle pattern in at least one region of the filtered image.